Comptes rendus de l'Académie bulgare des Sciences

C O N T E N T S

MATHEMATICS

01   Vassil Guliashki, Leoneed Kirilov   Algorithm Generating Initial Population of Schedules for Population-based Algorithms Solving Flexible Job Shop Problems

02   Georgi Ganchev, Krasimir Kanchev   Relation between the Maximal Space-like Surfaces in and the Maximal Space-like Surfaces in

03   Tsvetelin S. Zaevski   Early Exercise Boundary of an American Put

CHEMISTRY

04   Tsvetelina Doncheva, Nadezhda Kostova, Vassil Vutov, Ina Aneva, Stefan Philipov   Comparative Study of the Alkaloid Composition in Some Bulgarian Species of Genus Hypecoum

05   Opeyemi A. Ojelade, Sharif F. Zaman   CO₂ Hydrogenation to Methanol over PdZn/CeO₂ Catalyst

BIOLOGY

06   Boulbaba L’taief, Sihem Smari, Neila Abdi, Bouaziz Sifi   Biochemical and Physiological Characterization of Rhizobia Nodulating Vicia faba L. Genotypes

07   Zahra Hojjati Bonab, Parisa Mohammadi, Ezzat Asgarani, Nassim Ghorbanmehr   The Evaluation of Nitrogen Fixation Activity of Soil Cyanobacteria via Reduction Assay and Real-time PCR

08   Çetin Şenkul, Nurgül Karlıoğlu Kılıç   Modern Pollen Distribution of Çığlıkara Cedrus libani Forest (Southwest of Turkey)

GEOLOGY

09   Tsveta Stanimirova, Kristina Ivanova   Transformation of Ktenasite-type Minerals to Langite, Posnjakite, and Brochantite under Water Treatment

10   Dimitar Krenchev, Ahinora Baltakova, Rossitza Kenderova, Sonya Stoyanova, Tsveta Stanimirova   Weathering Products on Granites in the Pirin Mountain – Typology and Areal Distribution

SPACE SCIENCES

11   Alexander Gikov, Petar Dimitrov, Lachezar Filchev, Eugenia Roumenina, Georgi Jelev   Crop Type Mapping Using Multi-date Imagery from the Sentinel-2 Satellites

ENGINEERING SCIENCES

12   Pencho Marinov, Kiril Boyanov   Computers vs Human Brain

13   Ivan Chavdarov, Kaloyan Nikolov, Bozhidar Naydenov   Instant Centre of Rotation of the Robot Big Foot during Motion and Overcoming an Obstacle

14   Daniela Orozova   Appropriate E-test System Selection Model

MEDICINE

15   Konstantin Tachkov, Maria Dimitrova, Konstantin Mitov, Alexandra Savova   Assessment of the Risk Factors for COPD Development – a Methodological Approach

16   Plamen Krastev, Diana Trendafilova, Filip Abedinov, Iliyan Petrov, Peyo Simeonov, Hristo Angelov   Drugeluting Stent versus Bare-metal Stent in Saphenous Grafts Angioplasty

17   Liang Hui, Liu Jie, Huang Hui, Zhao Kun, Wei Yuan, Xiao Jie, Fu Min   Evaluation of PAX1 Methylation Triage as the Primary Screening Method in the Application of Early Diagnosis for Cervical Cancer

AGRICULTURAL SCIENCES

18   Salih Karabörklü, Ugur Azizoglu, Semih Yilmaz, Abdurrahman Ayvaz, Mehmet Akdeniz   The Chemical Composition of Cyclotrichium origanifolium Essential Oil and Its Insecticidal Activity against Four Stored-product Insect Pests